Ririka Momobami is a minor character from Kakegurui. She is vice president of the student council at Hyakkaou Private Academy and twin sister of Kirari Momobami. Her family is aligned with Yumeko Jabami's.


Her face is hidden throughout most of the series by a white, theatrical comedy mask that provides vocal distortion. Ririka is the identical twin sister of Kirari Momobami, so they share all of their facial features down to the blue lipstick. She has pale skin and long platinum hair (gray in the anime), styled with a hime-cut but unlike her sister, she wears her hair down. She dresses in the Hyakkaou Private Academy issued uniform; a red blazer with black trim lining the cuffs and collar, a white button up dress shirt, a dark pleated skirt, a tie and black/grey colored stockings, as well as the academy's issued footwear, brown colored loafers with black soles.


Ririka is a very quiet and stoic person. She often acts as an observer. Despite her silence during the Student Council's meetings, she's mostly is in step with her twin sister. She is first heard speaking when she volunteers to be the dealer and officiator of Yumeko's public match against Mayuda. In doing so, she displays a bit a of personality, showcasing her enthusiasm for high-stakes gambling.

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